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ef416fc2 | 1 | /* |
bc44d920 | 2 | * "$Id: interpret.c 6649 2007-07-11 21:46:42Z mike $" |
ef416fc2 | 3 | * |
4 | * PPD command interpreter for the Common UNIX Printing System (CUPS). | |
5 | * | |
bc44d920 | 6 | * Copyright 2007 by Apple Inc. |
b86bc4cf | 7 | * Copyright 1993-2007 by Easy Software Products. |
ef416fc2 | 8 | * |
9 | * These coded instructions, statements, and computer programs are the | |
bc44d920 | 10 | * property of Apple Inc. and are protected by Federal copyright |
11 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
12 | * which should have been included with this file. If this file is | |
13 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
ef416fc2 | 14 | * |
15 | * This file is subject to the Apple OS-Developed Software exception. | |
16 | * | |
17 | * Contents: | |
18 | * | |
19 | * cupsRasterInterpretPPD() - Interpret PPD commands to create a page header. | |
b86bc4cf | 20 | * _cupsRasterExecPS() - Execute PostScript code to initialize a page |
21 | * header. | |
22 | * cleartomark_stack() - Clear to the last mark ([) on the stack. | |
23 | * copy_stack() - Copy the top N stack objects. | |
24 | * delete_stack() - Free memory used by a stack. | |
f7deaa1a | 25 | * error_object() - Add an object's value to the current error |
26 | * message. | |
27 | * error_stack() - Add a stack to the current error message. | |
b86bc4cf | 28 | * index_stack() - Copy the Nth value on the stack. |
29 | * new_stack() - Create a new stack. | |
30 | * pop_stock() - Pop the top object off the stack. | |
31 | * push_stack() - Push an object on the stack. | |
32 | * roll_stack() - Rotate stack objects. | |
33 | * scan_ps() - Scan a string for the next PS object. | |
34 | * setpagedevice() - Simulate the PostScript setpagedevice operator. | |
35 | * DEBUG_object() - Print an object value. | |
36 | * DEBUG_stack() - Print a stack. | |
ef416fc2 | 37 | */ |
38 | ||
39 | /* | |
40 | * Include necessary headers... | |
41 | */ | |
42 | ||
ef416fc2 | 43 | #include <cups/string.h> |
b86bc4cf | 44 | #include "image-private.h" |
ef416fc2 | 45 | #include <stdlib.h> |
46 | ||
47 | ||
48 | /* | |
b86bc4cf | 49 | * Stack values for the PostScript mini-interpreter... |
ef416fc2 | 50 | */ |
51 | ||
b86bc4cf | 52 | typedef enum |
53 | { | |
54 | CUPS_PS_NAME, | |
55 | CUPS_PS_NUMBER, | |
56 | CUPS_PS_STRING, | |
57 | CUPS_PS_BOOLEAN, | |
58 | CUPS_PS_NULL, | |
59 | CUPS_PS_START_ARRAY, | |
60 | CUPS_PS_END_ARRAY, | |
61 | CUPS_PS_START_DICT, | |
62 | CUPS_PS_END_DICT, | |
63 | CUPS_PS_START_PROC, | |
64 | CUPS_PS_END_PROC, | |
65 | CUPS_PS_CLEARTOMARK, | |
66 | CUPS_PS_COPY, | |
67 | CUPS_PS_DUP, | |
68 | CUPS_PS_INDEX, | |
69 | CUPS_PS_POP, | |
70 | CUPS_PS_ROLL, | |
71 | CUPS_PS_SETPAGEDEVICE, | |
72 | CUPS_PS_STOPPED, | |
73 | CUPS_PS_OTHER | |
74 | } _cups_ps_type_t; | |
75 | ||
76 | typedef struct | |
77 | { | |
78 | _cups_ps_type_t type; /* Object type */ | |
79 | union | |
80 | { | |
81 | int boolean; /* Boolean value */ | |
82 | char name[64]; /* Name value */ | |
83 | double number; /* Number value */ | |
84 | char other[64]; /* Other operator */ | |
85 | char string[64]; /* Sring value */ | |
86 | } value; /* Value */ | |
87 | } _cups_ps_obj_t; | |
88 | ||
89 | typedef struct | |
90 | { | |
91 | int num_objs, /* Number of objects on stack */ | |
92 | alloc_objs; /* Number of allocated objects */ | |
93 | _cups_ps_obj_t *objs; /* Objects in stack */ | |
94 | } _cups_ps_stack_t; | |
ef416fc2 | 95 | |
96 | ||
97 | /* | |
98 | * Local functions... | |
99 | */ | |
100 | ||
b86bc4cf | 101 | static int cleartomark_stack(_cups_ps_stack_t *st); |
102 | static int copy_stack(_cups_ps_stack_t *st, int count); | |
103 | static void delete_stack(_cups_ps_stack_t *st); | |
f7deaa1a | 104 | static void error_object(_cups_ps_obj_t *obj); |
105 | static void error_stack(_cups_ps_stack_t *st, const char *title); | |
b86bc4cf | 106 | static _cups_ps_obj_t *index_stack(_cups_ps_stack_t *st, int n); |
107 | static _cups_ps_stack_t *new_stack(void); | |
108 | static _cups_ps_obj_t *pop_stack(_cups_ps_stack_t *st); | |
109 | static _cups_ps_obj_t *push_stack(_cups_ps_stack_t *st, | |
110 | _cups_ps_obj_t *obj); | |
111 | static int roll_stack(_cups_ps_stack_t *st, int c, int s); | |
112 | static _cups_ps_obj_t *scan_ps(_cups_ps_stack_t *st, char **ptr); | |
113 | static int setpagedevice(_cups_ps_stack_t *st, | |
114 | cups_page_header2_t *h, | |
115 | int *preferred_bits); | |
116 | #ifdef DEBUG | |
117 | static void DEBUG_object(_cups_ps_obj_t *obj); | |
118 | static void DEBUG_stack(_cups_ps_stack_t *st); | |
119 | #endif /* DEBUG */ | |
ef416fc2 | 120 | |
121 | ||
122 | /* | |
123 | * 'cupsRasterInterpretPPD()' - Interpret PPD commands to create a page header. | |
124 | * | |
923edb68 | 125 | * This function does not mark the options in the PPD using the "num_options" |
126 | * and "options" arguments. Instead, mark the options prior to calling | |
127 | * cupsRasterInterpretPPD() - this allows you to do per-page options | |
128 | * without manipulating the options array. | |
129 | * | |
a74454a7 | 130 | * The "func" argument specifies an optional callback function that is |
131 | * called prior to the computation of the final raster data. The function | |
132 | * can make changes to the cups_page_header2_t data as needed to use a | |
133 | * supported raster format and then returns 0 on success and -1 if the | |
134 | * requested attributes cannot be supported. | |
135 | * | |
b86bc4cf | 136 | * cupsRasterInterpretPPD() supports a subset of the PostScript language. |
137 | * Currently only the [, ], <<, >>, {, }, cleartomark, copy, dup, index, | |
138 | * pop, roll, setpagedevice, and stopped operators are supported. | |
139 | * | |
ef416fc2 | 140 | * @since CUPS 1.2@ |
141 | */ | |
142 | ||
143 | int /* O - 0 on success, -1 on failure */ | |
144 | cupsRasterInterpretPPD( | |
145 | cups_page_header2_t *h, /* O - Page header */ | |
923edb68 | 146 | ppd_file_t *ppd, /* I - PPD file */ |
147 | int num_options, /* I - Number of options */ | |
a74454a7 | 148 | cups_option_t *options, /* I - Options */ |
149 | cups_interpret_cb_t func) /* I - Optional page header callback */ | |
ef416fc2 | 150 | { |
ef416fc2 | 151 | int status; /* Cummulative status */ |
b86bc4cf | 152 | char *code; /* Code to run */ |
923edb68 | 153 | const char *val; /* Option value */ |
ef416fc2 | 154 | ppd_size_t *size; /* Current size */ |
155 | float left, /* Left position */ | |
156 | bottom, /* Bottom position */ | |
157 | right, /* Right position */ | |
158 | top; /* Top position */ | |
a74454a7 | 159 | int preferred_bits; /* Preferred bits per color */ |
ef416fc2 | 160 | |
161 | ||
162 | /* | |
163 | * Range check input... | |
164 | */ | |
165 | ||
f7deaa1a | 166 | _cupsRasterClearError(); |
167 | ||
ef416fc2 | 168 | if (!h) |
f7deaa1a | 169 | { |
170 | _cupsRasterAddError("Page header cannot be NULL!\n"); | |
ef416fc2 | 171 | return (-1); |
f7deaa1a | 172 | } |
ef416fc2 | 173 | |
174 | /* | |
175 | * Reset the page header to the defaults... | |
176 | */ | |
177 | ||
178 | memset(h, 0, sizeof(cups_page_header2_t)); | |
179 | ||
923edb68 | 180 | h->NumCopies = 1; |
181 | h->PageSize[0] = 612; | |
182 | h->PageSize[1] = 792; | |
183 | h->HWResolution[0] = 100; | |
184 | h->HWResolution[1] = 100; | |
185 | h->cupsBitsPerColor = 1; | |
186 | h->cupsColorOrder = CUPS_ORDER_CHUNKED; | |
187 | h->cupsColorSpace = CUPS_CSPACE_K; | |
188 | h->cupsBorderlessScalingFactor = 1.0f; | |
189 | h->cupsPageSize[0] = 612.0f; | |
190 | h->cupsPageSize[1] = 792.0f; | |
191 | h->cupsImagingBBox[0] = 0.0f; | |
192 | h->cupsImagingBBox[1] = 0.0f; | |
193 | h->cupsImagingBBox[2] = 612.0f; | |
194 | h->cupsImagingBBox[3] = 792.0f; | |
fa73b229 | 195 | |
196 | strcpy(h->cupsPageSizeName, "Letter"); | |
ef416fc2 | 197 | |
198 | /* | |
199 | * Apply patches and options to the page header... | |
200 | */ | |
201 | ||
a74454a7 | 202 | status = 0; |
203 | preferred_bits = 0; | |
ef416fc2 | 204 | |
205 | if (ppd) | |
206 | { | |
207 | /* | |
208 | * Apply any patch code (used to override the defaults...) | |
209 | */ | |
210 | ||
211 | if (ppd->patches) | |
b86bc4cf | 212 | status |= _cupsRasterExecPS(h, &preferred_bits, ppd->patches); |
ef416fc2 | 213 | |
214 | /* | |
215 | * Then apply printer options in the proper order... | |
216 | */ | |
217 | ||
b86bc4cf | 218 | if ((code = ppdEmitString(ppd, PPD_ORDER_DOCUMENT, 0.0)) != NULL) |
ef416fc2 | 219 | { |
b86bc4cf | 220 | status |= _cupsRasterExecPS(h, &preferred_bits, code); |
221 | free(code); | |
ef416fc2 | 222 | } |
223 | ||
b86bc4cf | 224 | if ((code = ppdEmitString(ppd, PPD_ORDER_ANY, 0.0)) != NULL) |
ef416fc2 | 225 | { |
b86bc4cf | 226 | status |= _cupsRasterExecPS(h, &preferred_bits, code); |
227 | free(code); | |
ef416fc2 | 228 | } |
229 | ||
b86bc4cf | 230 | if ((code = ppdEmitString(ppd, PPD_ORDER_PROLOG, 0.0)) != NULL) |
ef416fc2 | 231 | { |
b86bc4cf | 232 | status |= _cupsRasterExecPS(h, &preferred_bits, code); |
233 | free(code); | |
ef416fc2 | 234 | } |
235 | ||
b86bc4cf | 236 | if ((code = ppdEmitString(ppd, PPD_ORDER_PAGE, 0.0)) != NULL) |
ef416fc2 | 237 | { |
b86bc4cf | 238 | status |= _cupsRasterExecPS(h, &preferred_bits, code); |
239 | free(code); | |
ef416fc2 | 240 | } |
241 | } | |
242 | ||
923edb68 | 243 | /* |
244 | * Allow option override for page scaling... | |
245 | */ | |
246 | ||
247 | if ((val = cupsGetOption("cupsBorderlessScalingFactor", num_options, | |
248 | options)) != NULL) | |
249 | { | |
250 | float sc = atof(val); | |
251 | ||
f899b121 | 252 | if (sc >= 0.5 && sc <= 2.0) |
923edb68 | 253 | h->cupsBorderlessScalingFactor = sc; |
254 | } | |
255 | ||
ef416fc2 | 256 | /* |
257 | * Get the margins for the current size... | |
258 | */ | |
259 | ||
260 | if ((size = ppdPageSize(ppd, NULL)) != NULL) | |
261 | { | |
262 | /* | |
263 | * Use the margins from the PPD file... | |
264 | */ | |
265 | ||
266 | left = size->left; | |
267 | bottom = size->bottom; | |
268 | right = size->right; | |
269 | top = size->top; | |
fa73b229 | 270 | |
271 | strlcpy(h->cupsPageSizeName, size->name, sizeof(h->cupsPageSizeName)); | |
07725fee | 272 | |
273 | h->cupsPageSize[0] = size->width; | |
274 | h->cupsPageSize[1] = size->length; | |
ef416fc2 | 275 | } |
276 | else | |
277 | { | |
278 | /* | |
279 | * Use the default margins... | |
280 | */ | |
281 | ||
282 | left = 0.0f; | |
283 | bottom = 0.0f; | |
284 | right = 612.0f; | |
285 | top = 792.0f; | |
286 | } | |
287 | ||
923edb68 | 288 | h->PageSize[0] = h->cupsPageSize[0] * |
289 | h->cupsBorderlessScalingFactor; | |
290 | h->PageSize[1] = h->cupsPageSize[1] * | |
291 | h->cupsBorderlessScalingFactor; | |
292 | h->Margins[0] = left * h->cupsBorderlessScalingFactor; | |
293 | h->Margins[1] = bottom * h->cupsBorderlessScalingFactor; | |
294 | h->ImagingBoundingBox[0] = left * h->cupsBorderlessScalingFactor; | |
295 | h->ImagingBoundingBox[1] = bottom * h->cupsBorderlessScalingFactor; | |
296 | h->ImagingBoundingBox[2] = right * h->cupsBorderlessScalingFactor; | |
297 | h->ImagingBoundingBox[3] = top * h->cupsBorderlessScalingFactor; | |
fa73b229 | 298 | h->cupsImagingBBox[0] = left; |
299 | h->cupsImagingBBox[1] = bottom; | |
300 | h->cupsImagingBBox[2] = right; | |
301 | h->cupsImagingBBox[3] = top; | |
ef416fc2 | 302 | |
a74454a7 | 303 | /* |
304 | * Use the callback to validate the page header... | |
305 | */ | |
306 | ||
307 | if (func && (*func)(h, preferred_bits)) | |
f7deaa1a | 308 | { |
309 | _cupsRasterAddError("Page header callback returned error.\n"); | |
a74454a7 | 310 | return (-1); |
f7deaa1a | 311 | } |
a74454a7 | 312 | |
a9252913 | 313 | /* |
314 | * Check parameters... | |
315 | */ | |
316 | ||
317 | if (!h->HWResolution[0] || !h->HWResolution[1] || | |
318 | !h->PageSize[0] || !h->PageSize[1] || | |
319 | (h->cupsBitsPerColor != 1 && h->cupsBitsPerColor != 2 && | |
320 | h->cupsBitsPerColor != 4 && h->cupsBitsPerColor != 8 && | |
321 | h->cupsBitsPerColor != 16) || | |
b86bc4cf | 322 | h->cupsBorderlessScalingFactor < 0.5 || |
323 | h->cupsBorderlessScalingFactor > 2.0) | |
f7deaa1a | 324 | { |
325 | _cupsRasterAddError("Page header uses unsupported values.\n"); | |
a9252913 | 326 | return (-1); |
f7deaa1a | 327 | } |
a9252913 | 328 | |
ef416fc2 | 329 | /* |
330 | * Compute the bitmap parameters... | |
331 | */ | |
332 | ||
923edb68 | 333 | h->cupsWidth = (int)((right - left) * h->cupsBorderlessScalingFactor * |
fa73b229 | 334 | h->HWResolution[0] / 72.0f + 0.5f); |
923edb68 | 335 | h->cupsHeight = (int)((top - bottom) * h->cupsBorderlessScalingFactor * |
fa73b229 | 336 | h->HWResolution[1] / 72.0f + 0.5f); |
ef416fc2 | 337 | |
338 | switch (h->cupsColorSpace) | |
339 | { | |
340 | case CUPS_CSPACE_W : | |
341 | case CUPS_CSPACE_K : | |
342 | case CUPS_CSPACE_WHITE : | |
343 | case CUPS_CSPACE_GOLD : | |
344 | case CUPS_CSPACE_SILVER : | |
345 | h->cupsNumColors = 1; | |
346 | h->cupsBitsPerPixel = h->cupsBitsPerColor; | |
347 | break; | |
348 | ||
349 | default : | |
350 | /* | |
351 | * Ensure that colorimetric colorspaces use at least 8 bits per | |
352 | * component... | |
353 | */ | |
354 | ||
355 | if (h->cupsColorSpace >= CUPS_CSPACE_CIEXYZ && | |
356 | h->cupsBitsPerColor < 8) | |
357 | h->cupsBitsPerColor = 8; | |
358 | ||
359 | /* | |
360 | * Figure out the number of bits per pixel... | |
361 | */ | |
362 | ||
363 | if (h->cupsColorOrder == CUPS_ORDER_CHUNKED) | |
364 | { | |
365 | if (h->cupsBitsPerColor >= 8) | |
366 | h->cupsBitsPerPixel = h->cupsBitsPerColor * 3; | |
367 | else | |
368 | h->cupsBitsPerPixel = h->cupsBitsPerColor * 4; | |
369 | } | |
370 | else | |
371 | h->cupsBitsPerPixel = h->cupsBitsPerColor; | |
372 | ||
373 | h->cupsNumColors = 3; | |
374 | break; | |
375 | ||
376 | case CUPS_CSPACE_KCMYcm : | |
f301802f | 377 | if (h->cupsBitsPerColor == 1) |
ef416fc2 | 378 | { |
379 | if (h->cupsColorOrder == CUPS_ORDER_CHUNKED) | |
380 | h->cupsBitsPerPixel = 8; | |
381 | else | |
382 | h->cupsBitsPerPixel = 1; | |
383 | ||
384 | h->cupsNumColors = 6; | |
385 | break; | |
386 | } | |
387 | ||
388 | /* | |
389 | * Fall through to CMYK code... | |
390 | */ | |
391 | ||
392 | case CUPS_CSPACE_RGBA : | |
a74454a7 | 393 | case CUPS_CSPACE_RGBW : |
ef416fc2 | 394 | case CUPS_CSPACE_CMYK : |
395 | case CUPS_CSPACE_YMCK : | |
396 | case CUPS_CSPACE_KCMY : | |
397 | case CUPS_CSPACE_GMCK : | |
398 | case CUPS_CSPACE_GMCS : | |
399 | if (h->cupsColorOrder == CUPS_ORDER_CHUNKED) | |
400 | h->cupsBitsPerPixel = h->cupsBitsPerColor * 4; | |
401 | else | |
402 | h->cupsBitsPerPixel = h->cupsBitsPerColor; | |
403 | ||
404 | h->cupsNumColors = 4; | |
405 | break; | |
406 | } | |
407 | ||
408 | h->cupsBytesPerLine = (h->cupsBitsPerPixel * h->cupsWidth + 7) / 8; | |
409 | ||
410 | if (h->cupsColorOrder == CUPS_ORDER_BANDED) | |
411 | h->cupsBytesPerLine *= h->cupsNumColors; | |
412 | ||
413 | return (status); | |
414 | } | |
415 | ||
416 | ||
417 | /* | |
b86bc4cf | 418 | * '_cupsRasterExecPS()' - Execute PostScript code to initialize a page header. |
ef416fc2 | 419 | */ |
420 | ||
b86bc4cf | 421 | int /* O - 0 on success, -1 on error */ |
422 | _cupsRasterExecPS( | |
a74454a7 | 423 | cups_page_header2_t *h, /* O - Page header */ |
424 | int *preferred_bits,/* O - Preferred bits per color */ | |
b86bc4cf | 425 | const char *code) /* I - PS code to execute */ |
ef416fc2 | 426 | { |
b86bc4cf | 427 | _cups_ps_stack_t *st; /* PostScript value stack */ |
428 | _cups_ps_obj_t *obj; /* Object from top of stack */ | |
429 | char *codecopy, /* Copy of code */ | |
430 | *codeptr; /* Pointer into copy of code */ | |
431 | ||
ef416fc2 | 432 | |
b86bc4cf | 433 | DEBUG_printf(("_cupsRasterExecPS(h=%p, preferred_bits=%p, code=\"%s\")\n", |
434 | h, preferred_bits, code ? code : "(null)")); | |
ef416fc2 | 435 | |
436 | /* | |
b86bc4cf | 437 | * Copy the PostScript code and create a stack... |
ef416fc2 | 438 | */ |
439 | ||
b86bc4cf | 440 | if ((codecopy = strdup(code)) == NULL) |
f7deaa1a | 441 | { |
442 | _cupsRasterAddError("Unable to duplicate code string.\n"); | |
b86bc4cf | 443 | return (-1); |
f7deaa1a | 444 | } |
b86bc4cf | 445 | |
446 | if ((st = new_stack()) == NULL) | |
447 | { | |
f7deaa1a | 448 | _cupsRasterAddError("Unable to create stack.\n"); |
b86bc4cf | 449 | free(codecopy); |
ef416fc2 | 450 | return (-1); |
b86bc4cf | 451 | } |
ef416fc2 | 452 | |
453 | /* | |
b86bc4cf | 454 | * Parse the PS string until we run out of data... |
ef416fc2 | 455 | */ |
456 | ||
b86bc4cf | 457 | codeptr = codecopy; |
458 | ||
459 | while ((obj = scan_ps(st, &codeptr)) != NULL) | |
ef416fc2 | 460 | { |
b86bc4cf | 461 | #ifdef DEBUG |
462 | printf(" (%d): ", st->num_objs); | |
463 | DEBUG_object(obj); | |
464 | putchar('\n'); | |
465 | #endif /* DEBUG */ | |
466 | ||
467 | switch (obj->type) | |
468 | { | |
469 | default : | |
470 | /* Do nothing for regular values */ | |
471 | break; | |
472 | ||
473 | case CUPS_PS_CLEARTOMARK : | |
474 | pop_stack(st); | |
475 | ||
f7deaa1a | 476 | if (cleartomark_stack(st)) |
477 | _cupsRasterAddError("cleartomark: Stack underflow!\n"); | |
b86bc4cf | 478 | |
479 | #ifdef DEBUG | |
480 | fputs(" dup: ", stdout); | |
481 | DEBUG_stack(st); | |
482 | #endif /* DEBUG */ | |
483 | break; | |
484 | ||
485 | case CUPS_PS_COPY : | |
486 | pop_stack(st); | |
487 | if ((obj = pop_stack(st)) != NULL) | |
488 | { | |
489 | copy_stack(st, (int)obj->value.number); | |
490 | ||
491 | #ifdef DEBUG | |
492 | fputs(" copy: ", stdout); | |
493 | DEBUG_stack(st); | |
494 | #endif /* DEBUG */ | |
495 | } | |
496 | break; | |
497 | ||
498 | case CUPS_PS_DUP : | |
499 | pop_stack(st); | |
500 | copy_stack(st, 1); | |
501 | ||
502 | #ifdef DEBUG | |
503 | fputs(" dup: ", stdout); | |
504 | DEBUG_stack(st); | |
505 | #endif /* DEBUG */ | |
506 | break; | |
507 | ||
508 | case CUPS_PS_INDEX : | |
509 | pop_stack(st); | |
510 | if ((obj = pop_stack(st)) != NULL) | |
511 | { | |
512 | index_stack(st, (int)obj->value.number); | |
513 | ||
514 | #ifdef DEBUG | |
515 | fputs(" index: ", stdout); | |
516 | DEBUG_stack(st); | |
517 | #endif /* DEBUG */ | |
518 | } | |
519 | break; | |
520 | ||
521 | case CUPS_PS_POP : | |
522 | pop_stack(st); | |
523 | pop_stack(st); | |
524 | ||
525 | #ifdef DEBUG | |
526 | fputs(" pop: ", stdout); | |
527 | DEBUG_stack(st); | |
528 | #endif /* DEBUG */ | |
529 | break; | |
530 | ||
531 | case CUPS_PS_ROLL : | |
532 | pop_stack(st); | |
533 | if ((obj = pop_stack(st)) != NULL) | |
534 | { | |
535 | int c; /* Count */ | |
ef416fc2 | 536 | |
ef416fc2 | 537 | |
b86bc4cf | 538 | c = (int)obj->value.number; |
539 | ||
540 | if ((obj = pop_stack(st)) != NULL) | |
541 | { | |
542 | roll_stack(st, (int)obj->value.number, c); | |
543 | ||
544 | #ifdef DEBUG | |
545 | fputs(" roll:", stdout); | |
546 | DEBUG_stack(st); | |
547 | #endif /* DEBUG */ | |
548 | } | |
549 | } | |
550 | break; | |
551 | ||
552 | case CUPS_PS_SETPAGEDEVICE : | |
553 | pop_stack(st); | |
554 | setpagedevice(st, h, preferred_bits); | |
555 | ||
556 | #ifdef DEBUG | |
557 | fputs(" setpagedevice: ", stdout); | |
558 | DEBUG_stack(st); | |
559 | #endif /* DEBUG */ | |
560 | break; | |
561 | ||
562 | case CUPS_PS_START_PROC : | |
563 | case CUPS_PS_END_PROC : | |
564 | case CUPS_PS_STOPPED : | |
565 | pop_stack(st); | |
566 | break; | |
567 | ||
568 | case CUPS_PS_OTHER : | |
f7deaa1a | 569 | _cupsRasterAddError("Unknown operator \"%s\"!\n", obj->value.other); |
b86bc4cf | 570 | DEBUG_printf((" Unknown operator \"%s\"!\n", obj->value.other)); |
571 | break; | |
572 | } | |
573 | ||
574 | if (obj->type == CUPS_PS_OTHER) | |
ef416fc2 | 575 | break; |
b86bc4cf | 576 | } |
577 | ||
578 | /* | |
579 | * Cleanup... | |
580 | */ | |
581 | ||
582 | free(codecopy); | |
583 | ||
584 | if (st->num_objs > 0) | |
585 | { | |
f7deaa1a | 586 | error_stack(st, "Stack not empty:"); |
587 | ||
b86bc4cf | 588 | #ifdef DEBUG |
589 | fputs(" Stack not empty:", stdout); | |
590 | DEBUG_stack(st); | |
591 | #endif /* DEBUG */ | |
ef416fc2 | 592 | |
b86bc4cf | 593 | delete_stack(st); |
594 | ||
595 | return (-1); | |
596 | } | |
597 | ||
598 | delete_stack(st); | |
599 | ||
600 | /* | |
601 | * Return success... | |
602 | */ | |
603 | ||
604 | return (0); | |
605 | } | |
606 | ||
607 | ||
608 | /* | |
609 | * 'cleartomark_stack()' - Clear to the last mark ([) on the stack. | |
610 | */ | |
611 | ||
612 | static int /* O - 0 on success, -1 on error */ | |
613 | cleartomark_stack(_cups_ps_stack_t *st) /* I - Stack */ | |
614 | { | |
615 | _cups_ps_obj_t *obj; /* Current object on stack */ | |
616 | ||
617 | ||
618 | while ((obj = pop_stack(st)) != NULL) | |
619 | if (obj->type == CUPS_PS_START_ARRAY) | |
620 | break; | |
621 | ||
622 | return (obj ? 0 : -1); | |
623 | } | |
624 | ||
625 | ||
626 | /* | |
627 | * 'copy_stack()' - Copy the top N stack objects. | |
628 | */ | |
629 | ||
630 | static int /* O - 0 on success, -1 on error */ | |
631 | copy_stack(_cups_ps_stack_t *st, /* I - Stack */ | |
632 | int c) /* I - Number of objects to copy */ | |
633 | { | |
634 | int n; /* Index */ | |
635 | ||
636 | ||
637 | if (c < 0) | |
638 | return (-1); | |
639 | else if (c == 0) | |
640 | return (0); | |
641 | ||
642 | if ((n = st->num_objs - c) < 0) | |
643 | return (-1); | |
644 | ||
645 | while (c > 0) | |
646 | { | |
647 | if (!push_stack(st, st->objs + n)) | |
648 | return (-1); | |
649 | ||
650 | n ++; | |
651 | c --; | |
652 | } | |
653 | ||
654 | return (0); | |
655 | } | |
656 | ||
657 | ||
658 | /* | |
659 | * 'delete_stack()' - Free memory used by a stack. | |
660 | */ | |
661 | ||
662 | static void | |
663 | delete_stack(_cups_ps_stack_t *st) /* I - Stack */ | |
664 | { | |
665 | free(st->objs); | |
666 | free(st); | |
667 | } | |
668 | ||
669 | ||
f7deaa1a | 670 | /* |
671 | * 'error_object()' - Add an object's value to the current error message. | |
672 | */ | |
673 | ||
674 | static void | |
675 | error_object(_cups_ps_obj_t *obj) /* I - Object to add */ | |
676 | { | |
677 | switch (obj->type) | |
678 | { | |
679 | case CUPS_PS_NAME : | |
680 | _cupsRasterAddError(" /%s", obj->value.name); | |
681 | break; | |
682 | ||
683 | case CUPS_PS_NUMBER : | |
684 | _cupsRasterAddError(" %g", obj->value.number); | |
685 | break; | |
686 | ||
687 | case CUPS_PS_STRING : | |
688 | _cupsRasterAddError(" (%s)", obj->value.string); | |
689 | break; | |
690 | ||
691 | case CUPS_PS_BOOLEAN : | |
692 | if (obj->value.boolean) | |
693 | _cupsRasterAddError(" true"); | |
694 | else | |
695 | _cupsRasterAddError(" false"); | |
696 | break; | |
697 | ||
698 | case CUPS_PS_NULL : | |
699 | _cupsRasterAddError(" null"); | |
700 | break; | |
701 | ||
702 | case CUPS_PS_START_ARRAY : | |
703 | _cupsRasterAddError(" ["); | |
704 | break; | |
705 | ||
706 | case CUPS_PS_END_ARRAY : | |
707 | _cupsRasterAddError(" ]"); | |
708 | break; | |
709 | ||
710 | case CUPS_PS_START_DICT : | |
711 | _cupsRasterAddError(" <<"); | |
712 | break; | |
713 | ||
714 | case CUPS_PS_END_DICT : | |
715 | _cupsRasterAddError(" >>"); | |
716 | break; | |
717 | ||
718 | case CUPS_PS_START_PROC : | |
719 | _cupsRasterAddError(" {"); | |
720 | break; | |
721 | ||
722 | case CUPS_PS_END_PROC : | |
723 | _cupsRasterAddError(" }"); | |
724 | break; | |
725 | ||
726 | case CUPS_PS_COPY : | |
727 | _cupsRasterAddError(" --copy--"); | |
728 | break; | |
729 | ||
730 | case CUPS_PS_CLEARTOMARK : | |
731 | _cupsRasterAddError(" --cleartomark--"); | |
732 | break; | |
733 | ||
734 | case CUPS_PS_DUP : | |
735 | _cupsRasterAddError(" --dup--"); | |
736 | break; | |
737 | ||
738 | case CUPS_PS_INDEX : | |
739 | _cupsRasterAddError(" --index--"); | |
740 | break; | |
741 | ||
742 | case CUPS_PS_POP : | |
743 | _cupsRasterAddError(" --pop--"); | |
744 | break; | |
745 | ||
746 | case CUPS_PS_ROLL : | |
747 | _cupsRasterAddError(" --roll--"); | |
748 | break; | |
749 | ||
750 | case CUPS_PS_SETPAGEDEVICE : | |
751 | _cupsRasterAddError(" --setpagedevice--"); | |
752 | break; | |
753 | ||
754 | case CUPS_PS_STOPPED : | |
755 | _cupsRasterAddError(" --stopped--"); | |
756 | break; | |
757 | ||
758 | case CUPS_PS_OTHER : | |
759 | _cupsRasterAddError(" --%s--", obj->value.other); | |
760 | break; | |
761 | } | |
762 | } | |
763 | ||
764 | ||
765 | /* | |
766 | * 'error_stack()' - Add a stack to the current error message... | |
767 | */ | |
768 | ||
769 | static void | |
770 | error_stack(_cups_ps_stack_t *st, /* I - Stack */ | |
771 | const char *title) /* I - Title string */ | |
772 | { | |
773 | int c; /* Looping var */ | |
774 | _cups_ps_obj_t *obj; /* Current object on stack */ | |
775 | ||
776 | ||
777 | _cupsRasterAddError(title); | |
778 | ||
779 | for (obj = st->objs, c = st->num_objs; c > 0; c --, obj ++) | |
780 | error_object(obj); | |
781 | ||
782 | _cupsRasterAddError("\n"); | |
783 | } | |
784 | ||
785 | ||
b86bc4cf | 786 | /* |
787 | * 'index_stack()' - Copy the Nth value on the stack. | |
788 | */ | |
789 | ||
790 | static _cups_ps_obj_t * /* O - New object */ | |
791 | index_stack(_cups_ps_stack_t *st, /* I - Stack */ | |
792 | int n) /* I - Object index */ | |
793 | { | |
794 | if (n < 0 || (n = st->num_objs - n - 1) < 0) | |
795 | return (NULL); | |
796 | ||
797 | return (push_stack(st, st->objs + n)); | |
798 | } | |
799 | ||
800 | ||
801 | /* | |
802 | * 'new_stack()' - Create a new stack. | |
803 | */ | |
804 | ||
805 | static _cups_ps_stack_t * /* O - New stack */ | |
806 | new_stack(void) | |
807 | { | |
808 | _cups_ps_stack_t *st; /* New stack */ | |
809 | ||
810 | ||
811 | if ((st = calloc(1, sizeof(_cups_ps_stack_t))) == NULL) | |
812 | return (NULL); | |
813 | ||
814 | st->alloc_objs = 32; | |
815 | ||
816 | if ((st->objs = calloc(32, sizeof(_cups_ps_obj_t))) == NULL) | |
817 | { | |
818 | free(st); | |
819 | return (NULL); | |
820 | } | |
821 | else | |
822 | return (st); | |
823 | } | |
824 | ||
825 | ||
826 | /* | |
827 | * 'pop_stock()' - Pop the top object off the stack. | |
828 | */ | |
829 | ||
830 | static _cups_ps_obj_t * /* O - Object */ | |
831 | pop_stack(_cups_ps_stack_t *st) /* I - Stack */ | |
832 | { | |
833 | if (st->num_objs > 0) | |
834 | { | |
835 | st->num_objs --; | |
836 | ||
837 | return (st->objs + st->num_objs); | |
838 | } | |
839 | else | |
840 | return (NULL); | |
841 | } | |
842 | ||
843 | ||
844 | /* | |
845 | * 'push_stack()' - Push an object on the stack. | |
846 | */ | |
847 | ||
848 | static _cups_ps_obj_t * /* O - New object */ | |
849 | push_stack(_cups_ps_stack_t *st, /* I - Stack */ | |
850 | _cups_ps_obj_t *obj) /* I - Object */ | |
851 | { | |
852 | _cups_ps_obj_t *temp; /* New object */ | |
853 | ||
854 | ||
855 | if (st->num_objs >= st->alloc_objs) | |
856 | { | |
857 | ||
858 | ||
859 | st->alloc_objs += 32; | |
860 | ||
861 | if ((temp = realloc(st->objs, st->alloc_objs * | |
862 | sizeof(_cups_ps_obj_t))) == NULL) | |
863 | return (NULL); | |
864 | ||
865 | st->objs = temp; | |
866 | memset(temp + st->num_objs, 0, 32 * sizeof(_cups_ps_obj_t)); | |
867 | } | |
868 | ||
869 | temp = st->objs + st->num_objs; | |
870 | st->num_objs ++; | |
871 | ||
872 | memcpy(temp, obj, sizeof(_cups_ps_obj_t)); | |
873 | ||
874 | return (temp); | |
875 | } | |
876 | ||
877 | ||
878 | /* | |
879 | * 'roll_stack()' - Rotate stack objects. | |
880 | */ | |
881 | ||
882 | static int /* O - 0 on success, -1 on error */ | |
883 | roll_stack(_cups_ps_stack_t *st, /* I - Stack */ | |
884 | int c, /* I - Number of objects */ | |
885 | int s) /* I - Amount to shift */ | |
886 | { | |
887 | _cups_ps_obj_t *temp; /* Temporary array of objects */ | |
888 | int n; /* Index into array */ | |
889 | ||
890 | ||
891 | DEBUG_printf((" roll_stack(st=%p, s=%d, c=%d)\n", st, s, c)); | |
892 | ||
893 | /* | |
894 | * Range check input... | |
895 | */ | |
896 | ||
897 | if (c < 0) | |
898 | return (-1); | |
899 | else if (c == 0) | |
900 | return (0); | |
901 | ||
902 | if ((n = st->num_objs - c) < 0) | |
903 | return (-1); | |
904 | ||
905 | s %= c; | |
906 | ||
907 | if (s == 0) | |
908 | return (0); | |
909 | ||
910 | /* | |
911 | * Copy N objects and move things around... | |
912 | */ | |
913 | ||
914 | if (s < 0) | |
915 | { | |
ef416fc2 | 916 | /* |
b86bc4cf | 917 | * Shift down... |
ef416fc2 | 918 | */ |
919 | ||
b86bc4cf | 920 | s = -s; |
ef416fc2 | 921 | |
b86bc4cf | 922 | if ((temp = calloc(s, sizeof(_cups_ps_obj_t))) == NULL) |
923 | return (-1); | |
ef416fc2 | 924 | |
b86bc4cf | 925 | memcpy(temp, st->objs + n, s * sizeof(_cups_ps_obj_t)); |
926 | memmove(st->objs + n, st->objs + n + s, (c - s) * sizeof(_cups_ps_obj_t)); | |
927 | memcpy(st->objs + n + c - s, temp, s * sizeof(_cups_ps_obj_t)); | |
928 | } | |
929 | else | |
930 | { | |
ef416fc2 | 931 | /* |
b86bc4cf | 932 | * Shift up... |
ef416fc2 | 933 | */ |
934 | ||
b86bc4cf | 935 | if ((temp = calloc(s, sizeof(_cups_ps_obj_t))) == NULL) |
936 | return (-1); | |
ef416fc2 | 937 | |
b86bc4cf | 938 | memcpy(temp, st->objs + n + c - s, s * sizeof(_cups_ps_obj_t)); |
939 | memmove(st->objs + n + s, st->objs + n, | |
940 | (c - s) * sizeof(_cups_ps_obj_t)); | |
941 | memcpy(st->objs + n, temp, s * sizeof(_cups_ps_obj_t)); | |
942 | } | |
ef416fc2 | 943 | |
b86bc4cf | 944 | free(temp); |
945 | ||
946 | return (0); | |
947 | } | |
ef416fc2 | 948 | |
ef416fc2 | 949 | |
b86bc4cf | 950 | /* |
951 | * 'scan_ps()' - Scan a string for the next PS object. | |
952 | */ | |
953 | ||
954 | static _cups_ps_obj_t * /* O - New object or NULL on EOF */ | |
955 | scan_ps(_cups_ps_stack_t *st, /* I - Stack */ | |
956 | char **ptr) /* IO - String pointer */ | |
957 | { | |
958 | _cups_ps_obj_t obj; /* Current object */ | |
959 | char *start, /* Start of object */ | |
960 | *cur, /* Current position */ | |
961 | *valptr, /* Pointer into value string */ | |
962 | *valend; /* End of value string */ | |
963 | int parens; /* Parenthesis nesting level */ | |
ef416fc2 | 964 | |
ef416fc2 | 965 | |
b86bc4cf | 966 | /* |
967 | * Skip leading whitespace... | |
968 | */ | |
969 | ||
970 | for (cur = *ptr; *cur; cur ++) | |
971 | { | |
972 | if (*cur == '%') | |
ef416fc2 | 973 | { |
974 | /* | |
b86bc4cf | 975 | * Comment, skip to end of line... |
ef416fc2 | 976 | */ |
977 | ||
b86bc4cf | 978 | for (cur ++; *cur && *cur != '\n' && *cur != '\r'; cur ++); |
979 | } | |
980 | else if (!isspace(*cur & 255)) | |
981 | break; | |
982 | } | |
ef416fc2 | 983 | |
b86bc4cf | 984 | if (!*cur) |
985 | { | |
986 | *ptr = NULL; | |
ef416fc2 | 987 | |
b86bc4cf | 988 | return (NULL); |
989 | } | |
ef416fc2 | 990 | |
b86bc4cf | 991 | /* |
992 | * See what we have... | |
993 | */ | |
ef416fc2 | 994 | |
b86bc4cf | 995 | memset(&obj, 0, sizeof(obj)); |
ef416fc2 | 996 | |
b86bc4cf | 997 | switch (*cur) |
998 | { | |
999 | case '(' : /* (string) */ | |
1000 | obj.type = CUPS_PS_STRING; | |
1001 | start = cur; | |
1002 | ||
1003 | for (cur ++, parens = 1, valptr = obj.value.string, | |
1004 | valend = obj.value.string + sizeof(obj.value.string) - 1; | |
1005 | *cur; | |
1006 | cur ++) | |
1007 | { | |
1008 | if (*cur == ')' && parens == 1) | |
1009 | break; | |
1010 | ||
1011 | if (*cur == '(') | |
1012 | parens ++; | |
1013 | else if (*cur == ')') | |
1014 | parens --; | |
1015 | ||
1016 | if (valptr >= valend) | |
1017 | { | |
1018 | *ptr = start; | |
1019 | ||
1020 | return (NULL); | |
1021 | } | |
1022 | ||
1023 | if (*cur == '\\') | |
1024 | { | |
1025 | /* | |
1026 | * Decode escaped character... | |
1027 | */ | |
1028 | ||
1029 | cur ++; | |
1030 | ||
1031 | if (*cur == 'b') | |
1032 | *valptr++ = '\b'; | |
1033 | else if (*cur == 'f') | |
1034 | *valptr++ = '\f'; | |
1035 | else if (*cur == 'n') | |
1036 | *valptr++ = '\n'; | |
1037 | else if (*cur == 'r') | |
1038 | *valptr++ = '\r'; | |
1039 | else if (*cur == 't') | |
1040 | *valptr++ = '\t'; | |
1041 | else if (*cur >= '0' && *cur <= '7') | |
1042 | { | |
1043 | int ch = *cur - '0'; | |
1044 | ||
1045 | if (cur[1] >= '0' && cur[1] <= '7') | |
1046 | { | |
1047 | cur ++; | |
1048 | ch = (ch << 3) + *cur - '0'; | |
1049 | } | |
1050 | ||
1051 | if (cur[1] >= '0' && cur[1] <= '7') | |
1052 | { | |
1053 | cur ++; | |
1054 | ch = (ch << 3) + *cur - '0'; | |
1055 | } | |
1056 | ||
1057 | *valptr++ = ch; | |
1058 | } | |
1059 | else if (*cur == '\r') | |
1060 | { | |
1061 | if (cur[1] == '\n') | |
1062 | cur ++; | |
1063 | } | |
1064 | else if (*cur != '\n') | |
1065 | *valptr++ = *cur; | |
1066 | } | |
1067 | else | |
1068 | *valptr++ = *cur; | |
1069 | } | |
1070 | ||
1071 | if (*cur != ')') | |
1072 | { | |
1073 | *ptr = start; | |
1074 | ||
1075 | return (NULL); | |
1076 | } | |
1077 | ||
1078 | cur ++; | |
1079 | break; | |
1080 | ||
1081 | case '[' : /* Start array */ | |
1082 | obj.type = CUPS_PS_START_ARRAY; | |
1083 | cur ++; | |
1084 | break; | |
1085 | ||
1086 | case ']' : /* End array */ | |
1087 | obj.type = CUPS_PS_END_ARRAY; | |
1088 | cur ++; | |
1089 | break; | |
1090 | ||
1091 | case '<' : /* Start dictionary or hex string */ | |
1092 | if (cur[1] == '<') | |
1093 | { | |
1094 | obj.type = CUPS_PS_START_DICT; | |
1095 | cur += 2; | |
1096 | } | |
ef416fc2 | 1097 | else |
b86bc4cf | 1098 | { |
1099 | obj.type = CUPS_PS_STRING; | |
1100 | start = cur; | |
1101 | ||
1102 | for (cur ++, valptr = obj.value.string, | |
1103 | valend = obj.value.string + sizeof(obj.value.string) - 1; | |
1104 | *cur; | |
1105 | cur ++) | |
1106 | { | |
1107 | int ch; /* Current character */ | |
1108 | ||
1109 | ||
1110 | ||
1111 | if (*cur == '>') | |
1112 | break; | |
1113 | else if (valptr >= valend || !isxdigit(*cur & 255)) | |
1114 | { | |
1115 | *ptr = start; | |
1116 | return (NULL); | |
1117 | } | |
1118 | ||
1119 | if (*cur >= '0' && *cur <= '9') | |
1120 | ch = (*cur - '0') << 4; | |
1121 | else | |
1122 | ch = (tolower(*cur) - 'a' + 10) << 4; | |
1123 | ||
1124 | if (isxdigit(cur[1] & 255)) | |
1125 | { | |
1126 | cur ++; | |
1127 | ||
1128 | if (*cur >= '0' && *cur <= '9') | |
1129 | ch |= *cur - '0'; | |
1130 | else | |
1131 | ch |= tolower(*cur) - 'a' + 10; | |
1132 | } | |
1133 | ||
1134 | *valptr++ = ch; | |
1135 | } | |
1136 | ||
1137 | if (*cur != '>') | |
1138 | { | |
1139 | *ptr = start; | |
1140 | return (NULL); | |
1141 | } | |
1142 | ||
1143 | cur ++; | |
1144 | } | |
1145 | break; | |
ef416fc2 | 1146 | |
b86bc4cf | 1147 | case '>' : /* End dictionary? */ |
1148 | if (cur[1] == '>') | |
1149 | { | |
1150 | obj.type = CUPS_PS_END_DICT; | |
1151 | cur += 2; | |
1152 | } | |
1153 | else | |
1154 | { | |
1155 | obj.type = CUPS_PS_OTHER; | |
1156 | obj.value.other[0] = *cur; | |
1157 | ||
1158 | cur ++; | |
1159 | } | |
1160 | break; | |
1161 | ||
1162 | case '{' : /* Start procedure */ | |
1163 | obj.type = CUPS_PS_START_PROC; | |
1164 | cur ++; | |
1165 | break; | |
1166 | ||
1167 | case '}' : /* End procedure */ | |
1168 | obj.type = CUPS_PS_END_PROC; | |
1169 | cur ++; | |
1170 | break; | |
1171 | ||
1172 | case '-' : /* Possible number */ | |
1173 | case '+' : | |
1174 | if (!isdigit(cur[1] & 255) && cur[1] != '.') | |
1175 | { | |
1176 | obj.type = CUPS_PS_OTHER; | |
1177 | obj.value.other[0] = *cur; | |
1178 | ||
1179 | cur ++; | |
1180 | break; | |
1181 | } | |
1182 | ||
1183 | case '0' : /* Number */ | |
1184 | case '1' : | |
1185 | case '2' : | |
1186 | case '3' : | |
1187 | case '4' : | |
1188 | case '5' : | |
1189 | case '6' : | |
1190 | case '7' : | |
1191 | case '8' : | |
1192 | case '9' : | |
1193 | case '.' : | |
1194 | obj.type = CUPS_PS_NUMBER; | |
1195 | ||
1196 | start = cur; | |
1197 | for (cur ++; *cur; cur ++) | |
1198 | if (!isdigit(*cur & 255)) | |
1199 | break; | |
1200 | ||
1201 | if (*cur == '#') | |
1202 | { | |
1203 | /* | |
1204 | * Integer with radix... | |
1205 | */ | |
1206 | ||
1207 | obj.value.number = strtol(cur + 1, &cur, atoi(start)); | |
1208 | break; | |
1209 | } | |
1210 | else if (strchr(".Ee()<>[]{}/%", *cur) || isspace(*cur & 255)) | |
1211 | { | |
1212 | /* | |
1213 | * Integer or real number... | |
1214 | */ | |
ef416fc2 | 1215 | |
b86bc4cf | 1216 | obj.value.number = _cupsStrScand(start, &cur, localeconv()); |
1217 | break; | |
1218 | } | |
1219 | else | |
1220 | cur = start; | |
ef416fc2 | 1221 | |
b86bc4cf | 1222 | default : /* Operator/variable name */ |
1223 | start = cur; | |
1224 | ||
1225 | if (*cur == '/') | |
1226 | { | |
1227 | obj.type = CUPS_PS_NAME; | |
1228 | valptr = obj.value.name; | |
1229 | valend = obj.value.name + sizeof(obj.value.name) - 1; | |
1230 | cur ++; | |
1231 | } | |
ef416fc2 | 1232 | else |
b86bc4cf | 1233 | { |
1234 | obj.type = CUPS_PS_OTHER; | |
1235 | valptr = obj.value.other; | |
1236 | valend = obj.value.other + sizeof(obj.value.other) - 1; | |
1237 | } | |
ef416fc2 | 1238 | |
b86bc4cf | 1239 | while (*cur) |
1240 | { | |
1241 | if (strchr("()<>[]{}/%", *cur) || isspace(*cur & 255)) | |
1242 | break; | |
1243 | else if (valptr < valend) | |
1244 | *valptr++ = *cur++; | |
1245 | else | |
1246 | { | |
1247 | *ptr = start; | |
1248 | return (NULL); | |
1249 | } | |
1250 | } | |
1251 | ||
1252 | if (obj.type == CUPS_PS_OTHER) | |
1253 | { | |
1254 | if (!strcmp(obj.value.other, "true")) | |
1255 | { | |
1256 | obj.type = CUPS_PS_BOOLEAN; | |
1257 | obj.value.boolean = 1; | |
1258 | } | |
1259 | else if (!strcmp(obj.value.other, "false")) | |
1260 | { | |
1261 | obj.type = CUPS_PS_BOOLEAN; | |
1262 | obj.value.boolean = 0; | |
1263 | } | |
1264 | else if (!strcmp(obj.value.other, "null")) | |
1265 | obj.type = CUPS_PS_NULL; | |
1266 | else if (!strcmp(obj.value.other, "cleartomark")) | |
1267 | obj.type = CUPS_PS_CLEARTOMARK; | |
1268 | else if (!strcmp(obj.value.other, "copy")) | |
1269 | obj.type = CUPS_PS_COPY; | |
1270 | else if (!strcmp(obj.value.other, "dup")) | |
1271 | obj.type = CUPS_PS_DUP; | |
1272 | else if (!strcmp(obj.value.other, "index")) | |
1273 | obj.type = CUPS_PS_INDEX; | |
1274 | else if (!strcmp(obj.value.other, "pop")) | |
1275 | obj.type = CUPS_PS_POP; | |
1276 | else if (!strcmp(obj.value.other, "roll")) | |
1277 | obj.type = CUPS_PS_ROLL; | |
1278 | else if (!strcmp(obj.value.other, "setpagedevice")) | |
1279 | obj.type = CUPS_PS_SETPAGEDEVICE; | |
1280 | else if (!strcmp(obj.value.other, "stopped")) | |
1281 | obj.type = CUPS_PS_STOPPED; | |
1282 | } | |
1283 | break; | |
1284 | } | |
1285 | ||
1286 | /* | |
1287 | * Save the current position in the string and return the new object... | |
1288 | */ | |
1289 | ||
1290 | *ptr = cur; | |
1291 | ||
1292 | return (push_stack(st, &obj)); | |
1293 | } | |
1294 | ||
1295 | ||
1296 | /* | |
1297 | * 'setpagedevice()' - Simulate the PostScript setpagedevice operator. | |
1298 | */ | |
1299 | ||
1300 | static int /* O - 0 on success, -1 on error */ | |
1301 | setpagedevice( | |
1302 | _cups_ps_stack_t *st, /* I - Stack */ | |
1303 | cups_page_header2_t *h, /* O - Page header */ | |
1304 | int *preferred_bits)/* O - Preferred bits per color */ | |
1305 | { | |
1306 | int i; /* Index into array */ | |
1307 | _cups_ps_obj_t *obj, /* Current object */ | |
1308 | *end; /* End of dictionary */ | |
1309 | const char *name; /* Attribute name */ | |
1310 | ||
1311 | ||
1312 | /* | |
1313 | * Make sure we have a dictionary on the stack... | |
1314 | */ | |
1315 | ||
1316 | if (st->num_objs == 0) | |
1317 | return (-1); | |
1318 | ||
1319 | obj = end = st->objs + st->num_objs - 1; | |
1320 | ||
1321 | if (obj->type != CUPS_PS_END_DICT) | |
1322 | return (-1); | |
1323 | ||
1324 | obj --; | |
1325 | ||
1326 | while (obj > st->objs) | |
1327 | { | |
1328 | if (obj->type == CUPS_PS_START_DICT) | |
1329 | break; | |
1330 | ||
1331 | obj --; | |
1332 | } | |
1333 | ||
1334 | if (obj < st->objs) | |
1335 | return (-1); | |
ef416fc2 | 1336 | |
b86bc4cf | 1337 | /* |
1338 | * Found the start of the dictionary, empty the stack to this point... | |
1339 | */ | |
1340 | ||
1341 | st->num_objs = obj - st->objs; | |
1342 | ||
1343 | /* | |
1344 | * Now pull /name and value pairs from the dictionary... | |
1345 | */ | |
1346 | ||
1347 | DEBUG_puts(" Dictionary:"); | |
1348 | ||
1349 | for (obj ++; obj < end; obj ++) | |
1350 | { | |
ef416fc2 | 1351 | /* |
b86bc4cf | 1352 | * Grab the name... |
ef416fc2 | 1353 | */ |
1354 | ||
b86bc4cf | 1355 | if (obj->type != CUPS_PS_NAME) |
1356 | return (-1); | |
1357 | ||
1358 | name = obj->value.name; | |
1359 | obj ++; | |
1360 | ||
1361 | #ifdef DEBUG | |
1362 | printf(" /%s ", name); | |
1363 | DEBUG_object(obj); | |
1364 | putchar('\n'); | |
1365 | #endif /* DEBUG */ | |
1366 | ||
1367 | /* | |
1368 | * Then grab the value... | |
1369 | */ | |
1370 | ||
1371 | if (!strcmp(name, "MediaClass") && obj->type == CUPS_PS_STRING) | |
1372 | strlcpy(h->MediaClass, obj->value.string, sizeof(h->MediaClass)); | |
1373 | else if (!strcmp(name, "MediaColor") && obj->type == CUPS_PS_STRING) | |
1374 | strlcpy(h->MediaColor, obj->value.string, sizeof(h->MediaColor)); | |
1375 | else if (!strcmp(name, "MediaType") && obj->type == CUPS_PS_STRING) | |
1376 | strlcpy(h->MediaType, obj->value.string, sizeof(h->MediaType)); | |
1377 | else if (!strcmp(name, "OutputType") && obj->type == CUPS_PS_STRING) | |
1378 | strlcpy(h->OutputType, obj->value.string, sizeof(h->OutputType)); | |
1379 | else if (!strcmp(name, "AdvanceDistance") && obj->type == CUPS_PS_NUMBER) | |
1380 | h->AdvanceDistance = (unsigned)obj->value.number; | |
1381 | else if (!strcmp(name, "AdvanceMedia") && obj->type == CUPS_PS_NUMBER) | |
1382 | h->AdvanceMedia = (unsigned)obj->value.number; | |
1383 | else if (!strcmp(name, "Collate") && obj->type == CUPS_PS_BOOLEAN) | |
1384 | h->Collate = (unsigned)obj->value.boolean; | |
1385 | else if (!strcmp(name, "CutMedia") && obj->type == CUPS_PS_NUMBER) | |
1386 | h->CutMedia = (cups_cut_t)(unsigned)obj->value.number; | |
1387 | else if (!strcmp(name, "Duplex") && obj->type == CUPS_PS_BOOLEAN) | |
1388 | h->Duplex = (unsigned)obj->value.boolean; | |
1389 | else if (!strcmp(name, "HWResolution") && obj->type == CUPS_PS_START_ARRAY) | |
ef416fc2 | 1390 | { |
b86bc4cf | 1391 | if (obj[1].type == CUPS_PS_NUMBER && obj[2].type == CUPS_PS_NUMBER && |
1392 | obj[3].type == CUPS_PS_END_ARRAY) | |
1393 | { | |
1394 | h->HWResolution[0] = (unsigned)obj[1].value.number; | |
1395 | h->HWResolution[1] = (unsigned)obj[2].value.number; | |
1396 | obj += 3; | |
1397 | } | |
1398 | else | |
ef416fc2 | 1399 | return (-1); |
1400 | } | |
b86bc4cf | 1401 | else if (!strcmp(name, "InsertSheet") && obj->type == CUPS_PS_BOOLEAN) |
1402 | h->InsertSheet = (unsigned)obj->value.boolean; | |
1403 | else if (!strcmp(name, "Jog") && obj->type == CUPS_PS_NUMBER) | |
1404 | h->Jog = (unsigned)obj->value.number; | |
1405 | else if (!strcmp(name, "LeadingEdge") && obj->type == CUPS_PS_NUMBER) | |
1406 | h->LeadingEdge = (unsigned)obj->value.number; | |
1407 | else if (!strcmp(name, "ManualFeed") && obj->type == CUPS_PS_BOOLEAN) | |
1408 | h->ManualFeed = (unsigned)obj->value.boolean; | |
09a101d6 | 1409 | else if ((!strcmp(name, "cupsMediaPosition") || |
b86bc4cf | 1410 | !strcmp(name, "MediaPosition")) && obj->type == CUPS_PS_NUMBER) |
09a101d6 | 1411 | { |
1412 | /* | |
1413 | * cupsMediaPosition is supported for backwards compatibility only. | |
1414 | * We added it back in the Ghostscript 5.50 days to work around a | |
1415 | * bug in Ghostscript WRT handling of MediaPosition and setpagedevice. | |
1416 | * | |
1417 | * All new development should set MediaPosition... | |
1418 | */ | |
1419 | ||
b86bc4cf | 1420 | h->MediaPosition = (unsigned)obj->value.number; |
09a101d6 | 1421 | } |
b86bc4cf | 1422 | else if (!strcmp(name, "MediaWeight") && obj->type == CUPS_PS_NUMBER) |
1423 | h->MediaWeight = (unsigned)obj->value.number; | |
1424 | else if (!strcmp(name, "MirrorPrint") && obj->type == CUPS_PS_BOOLEAN) | |
1425 | h->MirrorPrint = (unsigned)obj->value.boolean; | |
1426 | else if (!strcmp(name, "NegativePrint") && obj->type == CUPS_PS_BOOLEAN) | |
1427 | h->NegativePrint = (unsigned)obj->value.boolean; | |
1428 | else if (!strcmp(name, "NumCopies") && obj->type == CUPS_PS_NUMBER) | |
1429 | h->NumCopies = (unsigned)obj->value.number; | |
1430 | else if (!strcmp(name, "Orientation") && obj->type == CUPS_PS_NUMBER) | |
1431 | h->Orientation = (unsigned)obj->value.number; | |
1432 | else if (!strcmp(name, "OutputFaceUp") && obj->type == CUPS_PS_BOOLEAN) | |
1433 | h->OutputFaceUp = (unsigned)obj->value.boolean; | |
1434 | else if (!strcmp(name, "PageSize") && obj->type == CUPS_PS_START_ARRAY) | |
ef416fc2 | 1435 | { |
b86bc4cf | 1436 | if (obj[1].type == CUPS_PS_NUMBER && obj[2].type == CUPS_PS_NUMBER && |
1437 | obj[3].type == CUPS_PS_END_ARRAY) | |
1438 | { | |
1439 | h->cupsPageSize[0] = obj[1].value.number; | |
1440 | h->cupsPageSize[1] = obj[2].value.number; | |
1441 | ||
1442 | h->PageSize[0] = (unsigned)obj[1].value.number; | |
1443 | h->PageSize[1] = (unsigned)obj[2].value.number; | |
1444 | ||
1445 | obj += 3; | |
1446 | } | |
1447 | else | |
fa73b229 | 1448 | return (-1); |
ef416fc2 | 1449 | } |
b86bc4cf | 1450 | else if (!strcmp(name, "Separations") && obj->type == CUPS_PS_BOOLEAN) |
1451 | h->Separations = (unsigned)obj->value.boolean; | |
1452 | else if (!strcmp(name, "TraySwitch") && obj->type == CUPS_PS_BOOLEAN) | |
1453 | h->TraySwitch = (unsigned)obj->value.boolean; | |
1454 | else if (!strcmp(name, "Tumble") && obj->type == CUPS_PS_BOOLEAN) | |
1455 | h->Tumble = (unsigned)obj->value.boolean; | |
1456 | else if (!strcmp(name, "cupsMediaType") && obj->type == CUPS_PS_NUMBER) | |
1457 | h->cupsMediaType = (unsigned)obj->value.number; | |
1458 | else if (!strcmp(name, "cupsBitsPerColor") && obj->type == CUPS_PS_NUMBER) | |
1459 | h->cupsBitsPerColor = (unsigned)obj->value.number; | |
1460 | else if (!strcmp(name, "cupsPreferredBitsPerColor") && | |
1461 | obj->type == CUPS_PS_NUMBER) | |
1462 | *preferred_bits = (int)obj->value.number; | |
1463 | else if (!strcmp(name, "cupsColorOrder") && obj->type == CUPS_PS_NUMBER) | |
1464 | h->cupsColorOrder = (cups_order_t)(unsigned)obj->value.number; | |
1465 | else if (!strcmp(name, "cupsColorSpace") && obj->type == CUPS_PS_NUMBER) | |
1466 | h->cupsColorSpace = (cups_cspace_t)(unsigned)obj->value.number; | |
1467 | else if (!strcmp(name, "cupsCompression") && obj->type == CUPS_PS_NUMBER) | |
1468 | h->cupsCompression = (unsigned)obj->value.number; | |
1469 | else if (!strcmp(name, "cupsRowCount") && obj->type == CUPS_PS_NUMBER) | |
1470 | h->cupsRowCount = (unsigned)obj->value.number; | |
1471 | else if (!strcmp(name, "cupsRowFeed") && obj->type == CUPS_PS_NUMBER) | |
1472 | h->cupsRowFeed = (unsigned)obj->value.number; | |
1473 | else if (!strcmp(name, "cupsRowStep") && obj->type == CUPS_PS_NUMBER) | |
1474 | h->cupsRowStep = (unsigned)obj->value.number; | |
923edb68 | 1475 | else if (!strcmp(name, "cupsBorderlessScalingFactor") && |
b86bc4cf | 1476 | obj->type == CUPS_PS_NUMBER) |
1477 | h->cupsBorderlessScalingFactor = obj->value.number; | |
1478 | else if (!strncmp(name, "cupsInteger", 11) && obj->type == CUPS_PS_NUMBER) | |
ef416fc2 | 1479 | { |
b86bc4cf | 1480 | if ((i = atoi(name + 11)) < 0 || i > 15) |
ef416fc2 | 1481 | return (-1); |
1482 | ||
b86bc4cf | 1483 | h->cupsInteger[i] = (unsigned)obj->value.number; |
ef416fc2 | 1484 | } |
b86bc4cf | 1485 | else if (!strncmp(name, "cupsReal", 8) && obj->type == CUPS_PS_NUMBER) |
ef416fc2 | 1486 | { |
b86bc4cf | 1487 | if ((i = atoi(name + 8)) < 0 || i > 15) |
ef416fc2 | 1488 | return (-1); |
1489 | ||
b86bc4cf | 1490 | h->cupsReal[i] = obj->value.number; |
ef416fc2 | 1491 | } |
b86bc4cf | 1492 | else if (!strncmp(name, "cupsString", 10) && obj->type == CUPS_PS_STRING) |
ef416fc2 | 1493 | { |
b86bc4cf | 1494 | if ((i = atoi(name + 10)) < 0 || i > 15) |
ef416fc2 | 1495 | return (-1); |
1496 | ||
b86bc4cf | 1497 | strlcpy(h->cupsString[i], obj->value.string, sizeof(h->cupsString[i])); |
ef416fc2 | 1498 | } |
b86bc4cf | 1499 | else if (!strcmp(name, "cupsMarkerType") && obj->type == CUPS_PS_STRING) |
1500 | strlcpy(h->cupsMarkerType, obj->value.string, sizeof(h->cupsMarkerType)); | |
1501 | else if (!strcmp(name, "cupsPageSizeName") && obj->type == CUPS_PS_STRING) | |
1502 | strlcpy(h->cupsPageSizeName, obj->value.string, | |
1503 | sizeof(h->cupsPageSizeName)); | |
1504 | else if (!strcmp(name, "cupsRenderingIntent") && | |
1505 | obj->type == CUPS_PS_STRING) | |
1506 | strlcpy(h->cupsRenderingIntent, obj->value.string, | |
1507 | sizeof(h->cupsRenderingIntent)); | |
1508 | else | |
ef416fc2 | 1509 | { |
b86bc4cf | 1510 | /* |
1511 | * Ignore unknown name+value... | |
1512 | */ | |
1513 | ||
1514 | DEBUG_printf((" Unknown name (\"%s\") or value...\n", name)); | |
1515 | ||
1516 | while (obj[1].type != CUPS_PS_NAME && obj < end) | |
1517 | obj ++; | |
ef416fc2 | 1518 | } |
ef416fc2 | 1519 | } |
1520 | ||
ef416fc2 | 1521 | return (0); |
1522 | } | |
1523 | ||
1524 | ||
b86bc4cf | 1525 | #ifdef DEBUG |
1526 | /* | |
1527 | * 'DEBUG_object()' - Print an object's value... | |
1528 | */ | |
1529 | ||
1530 | static void | |
1531 | DEBUG_object(_cups_ps_obj_t *obj) /* I - Object to print */ | |
1532 | { | |
1533 | switch (obj->type) | |
1534 | { | |
1535 | case CUPS_PS_NAME : | |
1536 | printf("/%s", obj->value.name); | |
1537 | break; | |
1538 | ||
1539 | case CUPS_PS_NUMBER : | |
1540 | printf("%g", obj->value.number); | |
1541 | break; | |
1542 | ||
1543 | case CUPS_PS_STRING : | |
1544 | printf("(%s)", obj->value.string); | |
1545 | break; | |
1546 | ||
1547 | case CUPS_PS_BOOLEAN : | |
1548 | if (obj->value.boolean) | |
1549 | fputs("true", stdout); | |
1550 | else | |
1551 | fputs("false", stdout); | |
1552 | break; | |
1553 | ||
1554 | case CUPS_PS_NULL : | |
1555 | fputs("null", stdout); | |
1556 | break; | |
1557 | ||
1558 | case CUPS_PS_START_ARRAY : | |
1559 | fputs("[", stdout); | |
1560 | break; | |
1561 | ||
1562 | case CUPS_PS_END_ARRAY : | |
1563 | fputs("]", stdout); | |
1564 | break; | |
1565 | ||
1566 | case CUPS_PS_START_DICT : | |
1567 | fputs("<<", stdout); | |
1568 | break; | |
1569 | ||
1570 | case CUPS_PS_END_DICT : | |
1571 | fputs(">>", stdout); | |
1572 | break; | |
1573 | ||
1574 | case CUPS_PS_START_PROC : | |
1575 | fputs("{", stdout); | |
1576 | break; | |
1577 | ||
1578 | case CUPS_PS_END_PROC : | |
1579 | fputs("}", stdout); | |
1580 | break; | |
1581 | ||
1582 | case CUPS_PS_CLEARTOMARK : | |
1583 | fputs("--cleartomark--", stdout); | |
1584 | break; | |
1585 | ||
1586 | case CUPS_PS_COPY : | |
1587 | fputs("--copy--", stdout); | |
1588 | break; | |
1589 | ||
1590 | case CUPS_PS_DUP : | |
1591 | fputs("--dup--", stdout); | |
1592 | break; | |
1593 | ||
1594 | case CUPS_PS_INDEX : | |
1595 | fputs("--index--", stdout); | |
1596 | break; | |
1597 | ||
1598 | case CUPS_PS_POP : | |
1599 | fputs("--pop--", stdout); | |
1600 | break; | |
1601 | ||
1602 | case CUPS_PS_ROLL : | |
1603 | fputs("--roll--", stdout); | |
1604 | break; | |
1605 | ||
1606 | case CUPS_PS_SETPAGEDEVICE : | |
1607 | fputs("--setpagedevice--", stdout); | |
1608 | break; | |
1609 | ||
1610 | case CUPS_PS_STOPPED : | |
1611 | fputs("--stopped--", stdout); | |
1612 | break; | |
1613 | ||
1614 | case CUPS_PS_OTHER : | |
1615 | printf("--%s--", obj->value.other); | |
1616 | break; | |
1617 | } | |
1618 | } | |
1619 | ||
1620 | ||
1621 | /* | |
1622 | * 'DEBUG_stack()' - Print a stack... | |
1623 | */ | |
1624 | ||
1625 | static void | |
1626 | DEBUG_stack(_cups_ps_stack_t *st) /* I - Stack */ | |
1627 | { | |
1628 | int c; /* Looping var */ | |
1629 | _cups_ps_obj_t *obj; /* Current object on stack */ | |
1630 | ||
1631 | ||
1632 | for (obj = st->objs, c = st->num_objs; c > 0; c --, obj ++) | |
1633 | { | |
1634 | putchar(' '); | |
1635 | DEBUG_object(obj); | |
1636 | } | |
1637 | ||
1638 | putchar('\n'); | |
1639 | } | |
1640 | #endif /* DEBUG */ | |
1641 | ||
1642 | ||
ef416fc2 | 1643 | /* |
bc44d920 | 1644 | * End of "$Id: interpret.c 6649 2007-07-11 21:46:42Z mike $". |
ef416fc2 | 1645 | */ |